What’s that you’re doing, Mr. Resch?

“I’m about to check the pump unit for the refrigerators on board an Airbus A350. The first step is to hook up the pump’s ten hoses to the test stand. The airplane’s refrigeration unit and cooling chamber are not installed together as they are in conventional refrigerators. Instead, a refrigeration unit in the belly of the aircraft supplies the refrigerators in the various galleys with coolant, which is much more efficient. The pump unit, or coolant distribution module (CDM), sends coolant through the system as required. When the CDM signals a problem, it is deinstalled and we check it over. Is one of the filters clogged? Is the pump drive mechanism faulty? We dismantle the module and make all necessary repairs. We are very much in demand worldwide for this particular job, by the way. In fact, Lufthansa Technik has an exclusive maintenance contract with the CDM manufacturer Honeywell under which only we in Hamburg may repair units installed in A350 aircraft.”